os/drivers/pci.h

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2019-02-09 12:52:45 -06:00
#ifndef PCI_H
#define PCI_H
typedef struct {
uint16_t vend_id;
uint16_t dev_id;
uint16_t command;
uint16_t status;
uint8_t rev_id;
uint8_t prog_if;
uint8_t subclass;
uint8_t class_code;
uint8_t cache_line_size;
uint8_t lat_timer;
uint8_t header_type;
uint8_t bist;
} __attribute__((packed)) pci_dev_common_info;
typedef enum {
PCI_CLASS_UNCLASSIFIED=0x0,
PCI_CLASS_STORAGE=0x1,
PCI_CLASS_NETWORK=0x2,
PCI_CLASS_DISPLAY=0x3,
PCI_CLASS_MULTIMEDIA=0x4,
PCI_CLASS_MEMORY=0x5,
PCI_CLASS_BRIDGE=0x6,
PCI_CLASS_SIMPCOM=0x7,
PCI_CLASS_BASEPERIPH=0x8,
PCI_CLASS_INPDEV=0x9,
PCI_CLASS_DOCK=0xa,
PCI_CLASS_CPU=0xb,
PCI_CLASS_SERBUS=0xc,
PCI_CLASS_WIRELESS=0xd,
PCI_CLASS_INTELLIGENT=0xe,
PCI_CLASS_SATELLITE=0xf,
PCI_CLASS_ENCRYPTION=0x10,
PCI_CLASS_SIGPROCESS=0x11,
} pci_class;
extern pci_dev_common_info** pci_devs;
extern uint32_t pci_num_devs;
void pci_init();
#endif